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Finding the Third Proportional to 3,931.19 and 6,312.50

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Solution

The third proportional to 3,931.19 and 6,312.50 is: 10,136.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.19 : 6,312.50 = 6,312.50 : x
  2. Step 2: Convert to fraction form
    3,931.19/6,312.50 = 6,312.50/x
  3. Step 3: Cross multiply
    3,931.19x = 6,312.50 × 6,312.50
  4. Step 4: Simplify right side
    3,931.19x = 39,847,656.25
  5. Step 5: Solve for x
    x = 39,847,656.25/3,931.19
  6. Step 6: Final answer
    x = 10,136.29

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.